Day 2 Plenary session was presented by Drs. Elizabeth Corbett and Daniel Douek. Dr. Corbett reviewed the interaction between TB and HIV infections and the need for HIV and TB interventions to be combined at a clinical and community level. She recommended home based care for resource poor settings; periodic access to TB diagnostics (smear collections) outside of the clinic; community wide INH (TB) treatment in miners; and strengthening the relationship between HIV and TB.
In Dr. Doucek lecture on Immune effects at HIV infected mucosal surfaces he eloquently reveiwed the relationship between CD4 T cell loss, mucosal barrier integrity, systemic immune activation and HIV/SIV disease progression. HIV infected individuals have leaky guts - increased gut permeability. Dr. Doucek outlined the difference between non-pathogenic and pathogenic primates (humans) response to HIV infection. The major difference is pathogenic primates do not downregulate the acute immune activation and nonpathogenic primates do. The immune activation phase is the most important phase for progression to AIDS. If there is one plenary to review on immune function it would be this lecture, he lays out the information in a simple manner that is understandable to nonimmunologist. The combination of Dr. Siliciano’s lecture about latent reservoirs and Dr. Douek’s lecture gives us a good understanding of why it has been such a difficult road to a cure for HIV.
Other very note worthy presentations for the day were in the area of HIV shedding in the genital track, aging and metabolic syndromes as risk factors for neurologic disorders, Hepatitis B & C Infections, Prevention and Treatment of Serious Malignancies.
Specific points from oral presentations:
- Delay in therapy in older adults is associated with higher mortality (10 year intervals)
- Delay of treatement in patients below 350 increase risk of AIDS and death was conclused in two observation studies.
- The cure of Hepatitis C seems to require triple therapy and may be accomplished without the use of interferon.
- Hepatitis cure may first require the clearing of infected cells and then the stopping of replication of virus.
- Increasing studies of the cognitive function of older adults (>50) required.
- The microbocide gel PRO2000 was shown to have a 30% level of protection in transmission of HIV infection but a 78% reduction in frequent gel users. It is not effective against other STDs or as a contraceptive (11% pregnancy rate).
Yours In Good Health